Finding the Fourth Proportional to 99,529.50, 137,350.71 and 54,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,529.50 : 137,350.71 = 54,817.50 : x
2. Step 2: Convert to fraction form
   99,529.50/137,350.71 = 54,817.50/x
3. Step 3: Cross multiply
   99,529.50x = 137,350.71 × 54,817.50
4. Step 4: Simplify right side
   99,529.50x = 7,529,222,545.43
5. Step 5: Solve for x
   x = 7,529,222,545.43/99,529.50
6. Step 6: Final answer
   x = 75,648.15